Estimating demand for care after a medicaid expansion: lessons from Oregon

J Ambul Care Manage. Oct-Dec 2014;37(4):282-92. doi: 10.1097/JAC.0000000000000023.

Abstract

To estimate how the Affordable Care Act's Medicaid expansions will affect demand for services, we measured ambulatory care utilization among adult patients who gained insurance during Oregon's 2008 Medicaid expansion. Using electronic health record data from 67 community health centers, we assessed pre- and postcoverage utilization among patients who gained insurance, compared with patients continuously insured or uninsured. In comparisons of the pre- and postcoverage periods, mean annual encounters among persons who gained insurance increased 22% to 35%, but declined in the comparison groups. These findings suggest that providers should expect a significant increase in demand among patients who gain Medicaid coverage through the Affordable Care Act.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Adult
  • Ambulatory Care / statistics & numerical data*
  • Community Health Centers / statistics & numerical data*
  • Female
  • Health Services Accessibility
  • Health Services Needs and Demand*
  • Health Services Research
  • Humans
  • Insurance Coverage / statistics & numerical data
  • Male
  • Medicaid / economics*
  • Middle Aged
  • Oregon
  • Patient Protection and Affordable Care Act
  • United States